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<title>Problem 1483. -- [HNOI2009]梦幻布丁 -- 衡阳八中OJ离线版-2012-02-29</title><center><h2>1483: [HNOI2009]梦幻布丁</h2><span class=green>Time Limit: </span>10 Sec&nbsp;&nbsp;<span class=green>Memory Limit: </span>64 MB<br><span class=green>Submit: </span>220&nbsp;&nbsp;<span class=green>Solved: </span>96<br>[<a href='submitpage.php?id=1483'>Submit</a>][<a href='problemstatus.php?id=1483'>Status</a>][<a href='bbs.php?id=1483'>Discuss</a>]</center><h2>Description</h2><div class=content>N个布丁摆成一行,进行M次操作.每次将某个颜色的布丁全部变成另一种颜色的,然后再询问当前一共有多少段颜色.例如颜色分别为1,2,2,1的四个布丁一共有3段颜色.</div><h2>Input</h2><div class=content>第一行给出N,M表示布丁的个数和好友的操作次数.
第二行N个数A1,A2...An表示第i个布丁的颜色
从第三行起有M行,对于每个操作,若第一个数字是1表示要对颜色进行改变，其后的两个整数X,Y表示将所有颜色为X的变为Y，X可能等于Y.
若第一个数字为2表示要进行询问当前有多少段颜色，这时你应该输出一个整数.
0<N,M<100001 
0<Ai,X,Y<1000000</div><h2>Output</h2><div class=content>针对第二类操作即询问，依次输出当前有多少段颜色.</div><h2>Sample Input</h2>
			<div class=content><span class=sampledata>4 3<br />
1 2 2 1<br />
2<br />
1 2 1<br />
2<br />
</span></div><h2>Sample Output</h2>
			<div class=content><span class=sampledata>3<br />
1<br />
</span></div><h2>HINT</h2>
			<div class=content><p></p></div><h2>Source</h2>
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